“Blood turbidity measuring device” and Smart Nigori Checker “CaLighD (mock)” measure blood turbidity generated after ingestion of fat-containing foods without blood sampling. Excessive energy intake, one of the causes of obesity, can be monitored by measuring this blood turbidity. “Blood turbidity measuring device" has been developed for pharmacies and researchers, and it can analyze many measurement subjects. " CaLighD " is a personal dedicated device that uses a smartphone to link with cloud services and various analysis services.